All HIV T-Helper (Th) epitopes mapped to within a region of 18 amino
acids or less are indicated on the HIV protein epitope maps. The
location and HLA restriction elements of Th epitopes are indicated on
protein sequences of HXB2. These maps are meant to provide the
relative location of defined epitopes on a given protein, but the HXB2
sequence may not actually carry the epitope of interest, as it may
vary relative to the sequence for which the epitope was defined.
Epitopes with identical boundaries and HLA fields are included in the
maps only once. If one laboratory determines HLA presenting molecules
at the serotype level (example: A2) and another at the genotype level
(example: A*0201) both will be included in the map. MHC specificities
are indicative of the host species; when no MHC presenting molecule is
defined, the host species is noted.